What is the GCF of the polynomial: −16y^4+12y^2−4y?

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

For what value of (y) is 3^3/3^y =1/9